Kazunori (服部一紀) Hattori
External sources
Loading FFA
Loading MV
FFA diagnostics
Run “Search / refresh FFA” to see each season, HTTP response, candidate and DUV comparison.
MarathonView diagnostics
Run “Refresh MV” to see login, session validation and parser status.
Cached locally. Empty refreshes never erase the last valid snapshot.
Born : 1961
Cat. M65 Ultrarunner since 2010
31
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
49
DUV-index+ ?Largest integer N such that the race distances provide at least N complete segments of N km in total. A single long race may therefore contribute several segments. See the DUV-Index tab for the detailed calculation. calculation details
1
Countries visited ?Japan
Japan80,2%
Rank quotient ?This runner's calculation uses 31 eligible race(s): Σ(rank − 1) = 31 700; Σ finishers = 39 538. 31 700 / 39 538 × 100 = 80.18%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed31
Km — ultra races2 662 km
Longest race100,0 km
41. Lake Saroma 100 km Ultramarathon — 28/6/2026
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road76,0%
Trail24,0%
Records
HISTORY
31 race(s)| Runner | Races in common |
|---|---|